The mentors for webhelp has come up with the following priority feature list to be expected from the possible students for webhelp [1]. If you are eligible to participate, and like to contribute to DocBook, and WebHelp, then join with us. The list provided might look overwhelming at first. For a new user, it always will be. :-) But by the time, it'll be OK. Unless otherwise specified, almost all the tasks expected are moderate. I would classify only one to have a bit of more research involved. The possible students can of course discuss about these and come to an agreement on what needs to be implemented which will match with our objectives, and students current skills plus skills that s/he like to develop.
During the proposal period, only keep your focus on first 5 tasks here and (6) a. Please don't hesitate to ask questions you may have regarding the provided tasks, and DocBook in general. There's still time to discuss and submit a proposal. The proposal deadline is April 6th, 19:00 UTC.